13643699976 has 96 divisors (see below), whose sum is σ = 37985912640. Its totient is φ = 4420842624.

The previous prime is 13643699969. The next prime is 13643699989. The reversal of 13643699976 is 67999634631.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4279455 + ... + 4282641.

It is an arithmetic number, because the mean of its divisors is an integer number (395686590).

Almost surely, 2^13643699976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13643699976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18992956320).

13643699976 is an abundant number, since it is smaller than the sum of its proper divisors (24342212664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13643699976 is a wasteful number, since it uses less digits than its factorization.

13643699976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4836 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 63.

The spelling of 13643699976 in words is "thirteen billion, six hundred forty-three million, six hundred ninety-nine thousand, nine hundred seventy-six".